For two identical stages in cascade, the drop-off rate in the high- and low-frequency regions has increased to ________ per decade.

For two identical stages in cascade, the drop-off rate in the high- an

1.	For two identical stages in cascade, the drop-off rate in the high- and low-frequency regions has increased to ________ per decade.
A.	3 dB
B.	6 dB
C.	20 dB
D.	40 dB
Answer» E.